JavaScript使用prototype原型实现的封装继承多态示例

2024-05-06 16:45:54

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本文实例讲述了JavaScript使用prototype原型实现的封装继承多态。分享给大家供大家参考，具体如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>www.vevb.com js基于原型prototype封装继承多态</title></head><body><script>function Person(name,age){ this.name=name; this.age=age;}Person.prototype.getName=function(){  return this.name;}Person.prototype.setName=function(name){  this.name=name;}Person.prototype.getAge=function(){  return this.age;}Person.prototype.setAge=function(age){  this.age=age;}//--------------------function Student(name,age,c){ this.name=name; this.age=age; this.c=c;}Student.prototype=new Person(this.name,this.age);//重点Student.prototype.getC=function(){ return this.c;}Student.prototype.setC=function(c){ this.c=c;}var a=new Person("小小",19);document.write(a.getName());//-----------------------------------------var b=new Student("大大",15,1);document.write(b.getName());</script></body></html>

运行结果：